Fire extinguisher



'0a. 2s, 1930. A

NflaELLoccl-no 1,779,959.

FIRE EXTINGUISHER Filed Der:` 3l, 1928 nl lllll INVENTOR. N/NOBELLOCCH/O.

"Y LM A TTORNEY VYacs Patented Oct. 28, 1930 NrNoBELLoocHIo, orNEW YORK;N; YQ

FIRE XTING'UISQER Y Appnatio'n'liiedrecember 31,1928. serialNaszascz.`

`This invention relates generally to' fire extinguishers and .has moreparticular reference to a novelmanual @operable firey eX- tinguisher. y5 o f 5 y The invention has for an object the provision of 'a device ofthe class mentioned, which isof simpledurable construction, desirableinuse and efficient in action, and which. can be `manufacturedand soldat a l0 reasonable cost.;y

The inventionproposes the use of a bottle provided with a stopper thruwhich a metallic tube passes. A valve is arranged on the top of thistube and connects with a nozzle 1'5 and a head for depressing the tube.Said head is arranged on the top of the valve body. The lower end of thetube is provided with a vial breaking foot normally resting against y la vial'lled'with citric acid. The tube may '20 be manually depressed forcausing the breaking of the vial and *the kcitric acid within whichcoacts withy l a solution Vof sodium bicarbonate contained inthe bottleso as to o raise a pressure within the bottle and cause 25 a dischargeof its contents.

` 30 the tube is in a depressed condition. This arrangement reduces thefrictional resistances between the stopper andthe tube permitting easykdepression of the tube. A means may be provided for holding the tubeinits "depressed conditionfor insuring a gas tight joint between'thestopper and the tube when the pressure within the bottle rises due tothey' chemical reaction.

. o kThe rpresent application shows a further Y development of theinvention disclosed in my pending application, filed August 24, 1928,

Serial No. 301,868. o

For further comprehension of the inven- 45 tion, and ofthe objects andadvantages thereof, reference will be hadY to the following descriptionand accompanying drawings, and to the appended Vclaims inVwhichfthe-.variousy novel features of the invention are more par- 50'ticularlyset forth.

Fig.v 5 is anenlarged viewjof a portionof y y Fig. 2. Y.

The reference numeral 101' indicates generally a bottle of any design orconstructionA preferably `made of'metal and providedfwith a neclrllhaving threadslQ. Acapil?) thread# edlyfengages upon the threadslforclosing p the top ofthe bottle. In'addition, alst'o'pper lat isrengagedwithinthe'wneck'Q th bottle. A metallicv tube 15 passes vthruv anaperture 16 y formed in thecap 12 and thruan aperture 11:7,

formedfin the stopper. 'L1A Ycoll'arfris fixed `uponY the tube15'beneaththe,stopper-14Tfor preventing excessive npwardmotion of "thetuae.; o The 'tube 1,5 isof L-shape and thebottoni portion 4IQVthereofisprovided with a. lufy ralityj'of slots 20V for provili-nglfa'passagefrom the' interior .of thebottlethruthetube. f Y Y A vialzbreaking foot"21 is'attac/lied upon Ythe tube 'l5 and engagesagainst vial QQfilledwith citric acid` 23.5' The vialY breaking Afoot 2l is: composed 'of twosections 4secured:to-`y ,f ggether.v v

The fop 0ftheiube :15 'is farmaci-mini@ within" this body, A jst'em26"conne cts .on thevalvejbody and isprovided with a yhead 27; Thelower'portion ofthe Villye body 24 of the-capl 'forjjlimitingzt'hedownward motion ofthe tube ll5.` A nozzle 29 connects Y with the 'valvelso that in'o'pe'n condition of thevalve a passagel exists .betweenthcnozzle and the tube '151" o v Y llie'stopper14y has a tapered apertureportion'lF.' The tubeV 1'5 is provided with a pered portion j 17 i ofthe. stopper for -providpressed condition;V 'Thisf arrangement .re-`

Vhas a shoulder 28which`coacts with the top duces the frictional areabetween the stopper and the tube so that a much smaller force isnecessary to depress the tube than if the contacting area between thestopper and the tube were greater.

A pin 30 projects from the shoulder 28 and is aligned with an aperture3l formed in the cap 13 and another aperture 32 formed in the stopper14. A stationary arm 33 is embedded Within the stopper and is connectedwith a pivotal link 34 having a pivotal locking pin 35 on its free end.This locking pin 35 extends into a transverse aperture 36 com`municating with the opening in the stopper 14. A string 37 connectsywith the pivotal joint between the locking pin 35 and the link 34 sothat upon pulling the stringthe locking pin 35 may be moved into aninoperative position as shown in the drawing.

The tube 15 is provide-d with a recess 38 arranged yfor receiving thelocking pin 35 when the ltube is in its depressed condition. Upondepression of the itube rlthe pin 30 enters the apertures 31 and n 32`and acts against the locking pin 35 for moving the locking in'inwardsinto the recess 38 and thus hol ing the tube 15 in its depressed condition. The tube cannot be raised until the vString y37 is drawn yuponfor` retracting the locking ypin from its locking position.

In operation of the device the vial 22 is broken by manually strikingthe head 27 for depressing the tube. vUpon a breaking of the vial 22citric acid within the vial is free andk chemically reacts with asolution of sodium bicarbonate 39 held Within the bottle 10. Gases arethen released which raises the pressure yWithin the bottle and causesits contents to ass thru the slots 20 and thru the tube 15 an finallyout of the nozzle 29. Thisdischarge may be directed againsta ame of afire for extinguishing it. The nozzle 29 mayy be turned for operatingthe valve 25 and cutt-in off the dischargeif this is desired.

ile I have shown and described the preferred embodiment of my invention,it is to be understood that I do not limit myself to the preciseconstruction herein disclosed and the right is reserved to all changesand modifications comingwithin the scope of the invention as defined inthe appended claims'.y

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent is 1. In a fire extinguisher, avstopper :for closin a bottle with a solution of bicarbonate of so a andformed with an aperture, a tube slidably engaging in the kaperture forbreak? ing when depressed a vial holding citric acid within the bottleand for directing the disf charge from the bottle, a pin connected withthe tube and extending within an opening in the stopper upon depressionof the tube, pivotall connected links mounted in the opening 1n thestopper and extendible by said pin for engaging in a recess in the tubeand holding the latter element depressed, and a string connected withthe links and extending from the stopper for manual drawing to disengagethe links from the tube.

2. In a fire extinguisher, a stopper for closing a bottle with asolution of bicarbonate of soda and formed with an aperture, a tubeslidably engaging in the aperture for breaking when depressed a vialholding citric acid within the bottle and for directing the dischargefrom the bottle, a pin connected with the tube and extending within anopening in the stopper upon depression of the tube, pivotally connectedlinks mounted in the opening in the stopper and extendible by saidpinfor engaging in a recess in the tube and holding the latter elementdepressed. and manual operable means for disengaging the links from thetube.

In testimony whereof I have affixed my signature.

NINO BELLOCCHIO.

iso

